Archival product


IRDM UHS-II U3 is a high-performance memory card designed for recording 4K videos and taking shooting high quality JPEG or RAW photos in burst-mode. It’s a reliable product that delivers high performance and superb joy of use.

Depending on the production batch, the actual appearance of memory cards, card reader or packaging may differ from that shown in the picture.

Item out of stock.
Key features
  • Available capacities:
    64 GB 128 GB 256 GB
  • UHS-II U3 interface
  • card standard: SDXC
  • video class standard: V60
  • MLC NAND flash technology
  • speed of operation:
    read up to 280 MB/s
    write up to 95 MB/s
  • lifetime warranty + technical support

Fast memory card

Read speed up to 280 MB/s and write speed up to 95 MB/s delivers productivity for people who want to capture every moment in high quality and store them for many years. Whether it’s a 4K quality video or high quality continuous shooting, IRDM memory cards work exactly as you expect them to.

Endurance pros need

The IRDM memory cards are shock-proof, water-resistant and resistant to X-rays, making them a great product for photographers who participate in extreme shooting sessions. IRDM memory card can operate in temperatures between -25°C and 85°C and store data between -40°C and 85°C. They are based on MLC NAND flash, which is up to 30x more durable than TLC NAND flash used in average consumer memory cards.

U3 and V60 speed standards

IRDM memory cards are based on the UHS-II interface with U3 speed, to provide maximum performance, no matter if you read or write data. V60 video speed class (VSC) guarantees a minimum sustained write speed of 60 MB/s, suffucient for processing 4K movies with increased framerates.


64, 128, 256 GB



Speed of operation1

read: up to 280 MB/s
write: up to 95 MB/s

File system


Operating temperature

-25 - 85°C (recommended)

Storage temperature

-40 - 85°C (recommended)

Operating and storage humidity

30 ~ 85% (recommended)

Power supply

Powered from the device


24 × 32 × 2.1 mm


2 g

Blister dimensions

103 mm (width) x 123 mm (height)

Weight (with packaging)

10 g

1. Based on internal tests using PCI-e adapter. Speed may vary depending on the testing methodology and platform and operating system.

Logistics data

Storage capacity for GOODRAM memory cards and USB is always expressed in decimal values. That means, 1GB equals 1 000 000 000 bytes. Operating system that use the binary conversion ie. 1GB equals 1,073,741,824 bytes may show lower storage capacity value than advertised.
64GB CARD V60 (UHS II U3) 280/95 MB/s IRDM GOODRAM64 GBcardIR-S6B0-0640R115908267911815
128GB CARD V60 (UHS II U3) 280/95 MB/s IRDM GOODRAM128 GBcardIR-S6B0-1280R115908267911822
256GB CARD V60 (UHS II U3) 280/95 MB/s IRDM GOODRAM256 GBcardIR-S6B0-2560R115908267911839

GOODRAM reserves the right to change the specification at any time without prior information.

Form factor Size File
Product brochure PDF 0.08 MB
Manual PDF 1 MB
Photos ZIP 3 MB